London Tourist Attractions London Tourist Attractions?Help Please!?

London tourist attractions?Help please!? - london tourist attractions

I'll be in London, will see only the Sunday as a day in order to Man Utd vs Chelsea. The fun starts at 4 clock and get the tube to sit at Wembley and I hope that during this time.
This is my first time in London and I would like to see is the London Eye, Big Ben and Harrods. I will be in London, 10 These sites are far apart? I have time for all, before they see the tube to get to Wembley?
Any help would be very grateful!